<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<!-- 轮播图 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item, i) in goods_info.pics" :key="i">
				<image :src="item.pics_big" @click="preview(i)"></image>
			</swiper-item>
		</swiper>
		<!-- 商品信息 -->
		<view class="goods-info-box">
			<view class="price">￥{{goods_info.goods_price}}</view>
			<view class="goods-info-body">
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<view class="yf">快递：免运费</view>
		</view>
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		<view class="goods-nav">
			<uni-goods-nav :fill="true" :options="options" :button-group="customButtonGroup" @click="onClick" @buttonClick="buttonClick" />
		</view>
	</view>
</template>

<script>
	import {mapState, mapMutations, mapGetters} from 'vuex';
	
	export default {
		data() {
			return {
				goods_info: {}, //商品信息
				//商品导航组件参数
				options: [{
					icon: 'shop',
					text: '店铺',
				}, {
					icon: 'cart',
					text: '购物车',
					info: 0,
				}],
				//商品导航组件按钮组参数
				customButtonGroup: [{
						text: '加入购物车',
						backgroundColor: 'linear-gradient(90deg, #FE6035, #EF1224)',
						color: '#fff'
					},
					{
						text: '立即购买',
						backgroundColor: 'linear-gradient(90deg, #FFCD1E, #FF8A18)',
						color: '#fff'
					}
				],
			};
		},
		computed: {
			...mapState('m_cart', []),
			...mapGetters('m_cart', ['total']),
		},
		watch: {
			/* total(newVal){
				const findResult = this.options.find(o => o.text === '购物车');
				
				if(findResult){
					//找到购物车选项
					findResult.info = newVal;
				}
			}, */
			total: {
				handler(newVal){
					const findResult = this.options.find(o => o.text === '购物车');
					
					if(findResult){
						//找到购物车选项
						findResult.info = newVal;
					}
				},
				immediate: true,
			},
		},
		onLoad(options) {
			const goods_id = options.goods_id;
			
			this.getGoodsDetail(goods_id);
		},
		methods: {
			...mapMutations('m_cart', ['addToCart']),
			//获取商品详情
			async getGoodsDetail(goods_id){
				const {data: res} = await uni.$http.get('/api/public/v1/goods/detail', {goods_id});
				
				if(res.meta.status !== 200){
					//请求失败
					return uni.$showMsg();
				}
				
				res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display: block;" ').replace(/webp/g, 'jpg');
				this.goods_info = res.message;
			},
			//点击大图
			preview(i){
				uni.previewImage({
					current: i,
					urls: this.goods_info.pics.map(x => x.pics_big)
				});
			},
			//商品导航组件左侧点击事件
			onClick(e){
				if(e.content.text === '购物车'){
					//点击的购物车按钮
					uni.switchTab({
						url: '../../pages/cart/cart'
					});
				}
			},
			//商品导航组件右侧按钮组点击事件
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					//点击的加入购物车按钮
					const goods = {
						goods_id: this.goods_info.goods_id,
						goods_name: this.goods_info.goods_name,
						goods_count: 1,
						goods_price: this.goods_info.goods_price,
						goods_small_logo: this.goods_info.goods_small_logo,
						goods_state: true,
					}
					
					this.addToCart(goods);
				}
			},
		},
	}
</script>

<style lang="scss">
.goods-detail-container {
	padding-bottom: 50px;
	swiper {
		height: 750rpx;
		image {
			width: 100%;
			height: 100%;
		}
	}
	.goods-info-box {
		padding: 10px;
		padding-right: 0;
		.price {
			color: #C00000;
			font-size: 18px;
			margin: 10px 0;
		}
		.goods-info-body {
			display: flex;
			justify-content: space-between;
			.goods-name {
				margin-right: 10px;
				font-size: 13px;
			}
			.favi {
				width: 120px;
				border-left: solid 1px #EFEFEF;
				display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
				font-size: 12px;
				color: gray;
			}
		}
		.yf {
			font-size: 12px;
			color: gray;
			margin: 10px 0;
		}
	}
	.goods-nav {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
	}
}
</style>
